1. Preconditioning, class 2 only:
150 +0/-10 °C /1 hour, then keep for
24 ± 1 hour at room temp
2. Initial measure:
Parameter: IR
Measuring voltage: 1.5V ± 0.1 VDC
Note: Series with 100 KΩ & 6.8 KΩ
3. Test condition:
85 °C, 85% R.H. connected with 100 KΩ resistor, applied
1.5V/U
r
for 1,000 hours.
4. Recovery:
Class1: 6 to 24 hours
Class2: 24 ± 2 hours
5. Final measure: IR
Initial requirement:
Class1:
- Connected to 100 KΩ:
C ≤ 10 nF: I.R ≥ 10,000 MΩ
or
C > 10 nF: (I.R-100 KΩ) x C
≥ 100s.
- Connected to 6.8 KΩ:
C ≤ 10 nF: I.R ≥ 10,000 MΩ
or
C > 10 nF: (I.R-6.8 KΩ) x C
≥ 100s.
Class2:
- Connected to 100 KΩ:
C ≤ 25 nF: I.R ≥ 4,000 MΩ or
C > 25 nF: (I.R-100 KΩ) x C
≥ 100s.
- Connected to 6.8 KΩ:
C ≤ 25 nF: I.R ≥ 10,000 MΩ
or
C > 25 nF: (I.R-6.8 KΩ) x C
≥ 100s.
Final measurement:
The insulation resistance shall
be greater than 0.1 time initial
value.
